| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c72d118f5664072de841f9c5c34b9d99 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G64-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G64-183
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G69-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G65-4081
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G63-193 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-193
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G64-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G64-18
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G65-40
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G69-00 |
| filingDate |
1987-06-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1989-06-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a06b2cce6b3fcafcdbb8cebb56d8a2b3
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5ad7e3d7cbf4f58c1e244a9165a11a36 |
| publicationDate |
1989-06-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-4837298-A |
| titleOfInvention |
Cyclic imides from spirobiindane diamines and methods of preparation |
| abstract |
Cyclic imides are prepared by the reaction of a bis(dicarboxyphenyl) sulfide or functional derivative thereof, and optionally a second tetracarboxylic acid or functional derivative thereof such as 2,2-bis[4-(3,4-dicarboxyphenoxy)phenyl]propane dianhydride, with a diamine having a spirobiindane nucleus. The cyclic imides may be converted to linear polyimides by reaction with a basic alkali metal sulfide. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5332800-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5189160-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-RE34431-E
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5110893-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4980453-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4950727-A |
| priorityDate |
1987-06-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |